X-ray, H-alpha, and radio observations of the two-ribbon flare of 16 May, 1981

Details X-ray, H-alpha, and radio observations of the two-ribbon flare of 16 May, 1981 X-ray, H-alpha, and radio observations of the two-ribbon flare of 16 May, 1981

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...89..355f&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 89, Dec. 1983, p. 355-378.

Astronomy and Astrophysics

Astronomy

30

H Alpha Line, Solar Flares, Solar Radio Emission, X Ray Astronomy, Filaments, Solar Activity, Solar Instruments, Solar X-Rays, Sunspots, Time Response

Scientific paper

The paper is contribution to the study of two-ribbon flares. A variety of observational material, i.e., H-alpha pictures, radio spectrum in the frequency band of 150-1000 MHz, radio map at 6 cm, fluxes at other frequencies, magnetograms, and X-ray flux in a broad energy interval, enabled the study of the development of the May 16, 1981, flare. The onset of the flare could be described by the model of Van Tend and Kuperus (1978). A diminishing of the magnetic shear during the activation of the filament was observed. From radio and X-ray data, it was found that pulsed acceleration took place in the region under the rising filament, the electrons propagating in a limited region both upwards to greater heights and downwards into the footpoints. Internal oscillations of the filament were observed. A manifestation of the primary process of interplanetary shock wave generation was found. The 6-cm radio sources could be localized in the footpoints of magnetic loops.

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